Home / 280,038.20-386,339.78-162,087.52

Finding the Fourth Proportional to 280,038.20, 386,339.78 and 162,087.52

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Solution

The fourth proportional to 280,038.20, 386,339.78 and 162,087.52 is: 223,615.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,038.20 : 386,339.78 = 162,087.52 : x
  2. Step 2: Convert to fraction form
    280,038.20/386,339.78 = 162,087.52/x
  3. Step 3: Cross multiply
    280,038.20x = 386,339.78 × 162,087.52
  4. Step 4: Simplify right side
    280,038.20x = 62,620,856,817.55
  5. Step 5: Solve for x
    x = 62,620,856,817.55/280,038.20
  6. Step 6: Final answer
    x = 223,615.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.